Proxmox Ceph

flashback830 · Saturday at 10:41

Hello everyone,

I’m getting a bit desperate at this point. I have 3 Proxmox servers, two of which are supposed to run Ceph. Ceph itself works, but apparently not over the intended 10 G connection — it’s only using a 1 G connection. The third server is basically just acting as an additional monitor/manager.
In the two Ceph servers, there are 6 SSDs each (OSD) plus 2 SSDs in a RAID 1 for the OS.

My problem is this: ( The picture is from a VM )

Obviously, that’s far from what SSDs and a 10 G link should be delivering.

The configuration is as follows:
192.168.25.0/24 – for the VMs themselves (1 G)
192.168.26.0/24 – management VLAN (1 G)
192.168.30.0/24 – transfer for Ceph (10 G)

Server 1:

Code:

root@DC3-R630:~# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host noprefixroute
       valid_lft forever preferred_lft forever
2: eno3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq master vmbr1 state UP group default qlen 1000
    link/ether 24:6e:96:74:8d:9c brd ff:ff:ff:ff:ff:ff
    altname enp6s0f0
    altname enx246e96748d9c
3: eno4: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq master vmbr0 state UP group default qlen 1000
    link/ether 24:6e:96:74:8d:9d brd ff:ff:ff:ff:ff:ff
    altname enp6s0f1
    altname enx246e96748d9d
4: eno1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9000 qdisc mq master trans1 state UP group default qlen 1000
    link/ether 24:6e:96:74:8d:98 brd ff:ff:ff:ff:ff:ff
    altname enp1s0f0
    altname enx246e96748d98
5: eno2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
    link/ether 24:6e:96:74:8d:9a brd ff:ff:ff:ff:ff:ff
    altname enp1s0f1
    altname enx246e96748d9a
6: vmbr0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether 24:6e:96:74:8d:9d brd ff:ff:ff:ff:ff:ff
    inet 192.168.26.240/24 scope global vmbr0
       valid_lft forever preferred_lft forever
    inet6 fe80::266e:96ff:fe74:8d9d/64 scope link proto kernel_ll
       valid_lft forever preferred_lft forever
7: trans1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9000 qdisc noqueue state UP group default qlen 1000
    link/ether 24:6e:96:74:8d:98 brd ff:ff:ff:ff:ff:ff
    inet 192.168.30.240/24 scope global trans1
       valid_lft forever preferred_lft forever
    inet6 fe80::266e:96ff:fe74:8d98/64 scope link proto kernel_ll
       valid_lft forever preferred_lft forever
8: vmbr1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether 24:6e:96:74:8d:9c brd ff:ff:ff:ff:ff:ff
    inet 192.168.25.240/24 scope global vmbr1
       valid_lft forever preferred_lft forever
    inet6 fe80::266e:96ff:fe74:8d9c/64 scope link proto kernel_ll
       valid_lft forever preferred_lft forever
9: veth504i0@if2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master vmbr1 state UP group default qlen 1000
    link/ether fe:30:9a:07:6c:0c brd ff:ff:ff:ff:ff:ff link-netnsid 0
14: tap1000i0: <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc fq_codel master vmbr1 state UNKNOWN group default qlen 1000
    link/ether 76:96:3f:34:d7:e1 brd ff:ff:ff:ff:ff:ff
15: tap500i0: <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc fq_codel master vmbr1 state UNKNOWN group default qlen 1000
    link/ether 36:26:76:d2:04:1c brd ff:ff:ff:ff:ff:ff
16: veth502i0@if2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master vmbr1 state UP group default qlen 1000
    link/ether fe:c9:a8:7e:f0:79 brd ff:ff:ff:ff:ff:ff link-netnsid 1
17: veth503i0@if2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master vmbr1 state UP group default qlen 1000
    link/ether fe:6b:df:33:47:65 brd ff:ff:ff:ff:ff:ff link-netnsid 2
18: veth501i0@if2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master vmbr1 state UP group default qlen 1000
    link/ether fe:7a:41:fa:01:58 brd ff:ff:ff:ff:ff:ff link-netnsid 3

Code:

root@DC3-R630:~# iperf3 -c 192.168.30.241
Connecting to host 192.168.30.241, port 5201
[  5] local 192.168.30.240 port 46976 connected to 192.168.30.241 port 5201
[ ID] Interval           Transfer     Bitrate         Retr  Cwnd
[  5]   0.00-1.00   sec  1.15 GBytes  9.91 Gbits/sec   29   1.56 MBytes
[  5]   1.00-2.00   sec  1.15 GBytes  9.88 Gbits/sec    2   1.58 MBytes
[  5]   2.00-3.00   sec  1.15 GBytes  9.89 Gbits/sec    0   1.60 MBytes
[  5]   3.00-4.00   sec  1.15 GBytes  9.89 Gbits/sec    0   1.62 MBytes
[  5]   4.00-5.00   sec  1.15 GBytes  9.89 Gbits/sec    0   1.72 MBytes
[  5]   5.00-6.00   sec  1.15 GBytes  9.89 Gbits/sec    0   1.89 MBytes
[  5]   6.00-7.00   sec  1.15 GBytes  9.90 Gbits/sec    0   2.18 MBytes
[  5]   7.00-8.00   sec  1.15 GBytes  9.88 Gbits/sec    0   2.53 MBytes
[  5]   8.00-9.00   sec  1.15 GBytes  9.89 Gbits/sec    0   2.53 MBytes
[  5]   9.00-10.00  sec  1.15 GBytes  9.90 Gbits/sec    0   2.53 MBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.00  sec  11.5 GBytes  9.89 Gbits/sec   31            sender
[  5]   0.00-10.00  sec  11.5 GBytes  9.89 Gbits/sec                  receiver

iperf Done.

Code:

[global]
cluster_network = 192.168.30.0/24
    auth_client_required = cephx
    auth_cluster_required = cephx
    auth_service_required = cephx
    fsid = 2c73b9cd-e0d5-42a6-a47b-b713ac77000f
    mon_allow_pool_delete = true
    mon_host = 192.168.26.240 192.168.26.241 192.168.26.230
    ms_bind_ipv4 = true
    ms_bind_ipv6 = false
    osd_pool_default_min_size = 2
    osd_pool_default_size = 3
    public_network = 192.168.26.0/24

[client]
    auth_client_required = cephx
    auth_cluster_required = cephx
    auth_service_required = cephx
    keyring = /etc/pve/priv/$cluster.$name.keyring
    mon_allow_pool_delete = true
    ms_bind_ipv6 = false
    osd_pool_default_min_size = 1
    osd_pool_default_size = 2
    public_network = 192.168.26.0/24

[client.crash]
    keyring = /etc/pve/ceph/$cluster.$name.keyring

[mon.DC3-R630]
    public_addr = 192.168.26.240

[mon.DC4-R630]
    public_addr = 192.168.26.241

mon_host = 192.168.26.240,192.168.26.241,192.168.26.230
mon_initial_members = DC3-R630, DC4-R630, PLEX

Server 2:

Code:

root@DC4-R630:~# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host noprefixroute
       valid_lft forever preferred_lft forever
2: eno1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
    link/ether 24:6e:96:12:4d:4c brd ff:ff:ff:ff:ff:ff
    altname enp1s0f0
    altname enx246e96124d4c
3: eno2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
    link/ether 24:6e:96:12:4d:4d brd ff:ff:ff:ff:ff:ff
    altname enp1s0f1
    altname enx246e96124d4d
4: enp4s0f0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9000 qdisc mq master trans1 state UP group default qlen 1000
    link/ether a0:36:9f:e0:79:78 brd ff:ff:ff:ff:ff:ff
    altname enxa0369fe07978
5: eno3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq master vmbr1 state UP group default qlen 1000
    link/ether 24:6e:96:12:4d:4e brd ff:ff:ff:ff:ff:ff
    altname enp1s0f2
    altname enx246e96124d4e
6: eno4: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq master vmbr0 state UP group default qlen 1000
    link/ether 24:6e:96:12:4d:4f brd ff:ff:ff:ff:ff:ff
    altname enp1s0f3
    altname enx246e96124d4f
7: enp4s0f1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
    link/ether a0:36:9f:e0:79:7a brd ff:ff:ff:ff:ff:ff
    altname enxa0369fe0797a
8: idrac: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
    link/ether f4:8e:38:cd:4d:83 brd ff:ff:ff:ff:ff:ff
9: vmbr0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether 24:6e:96:12:4d:4f brd ff:ff:ff:ff:ff:ff
    inet 192.168.26.241/24 scope global vmbr0
       valid_lft forever preferred_lft forever
    inet6 fe80::266e:96ff:fe12:4d4f/64 scope link proto kernel_ll
       valid_lft forever preferred_lft forever
10: vmbr1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether 24:6e:96:12:4d:4e brd ff:ff:ff:ff:ff:ff
    inet 192.168.25.241/24 scope global vmbr1
       valid_lft forever preferred_lft forever
    inet6 fe80::266e:96ff:fe12:4d4e/64 scope link proto kernel_ll
       valid_lft forever preferred_lft forever
11: trans1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9000 qdisc noqueue state UP group default qlen 1000
    link/ether a0:36:9f:e0:79:78 brd ff:ff:ff:ff:ff:ff
    inet 192.168.30.241/24 scope global trans1
       valid_lft forever preferred_lft forever
    inet6 fe80::a236:9fff:fee0:7978/64 scope link proto kernel_ll
       valid_lft forever preferred_lft forever
13: tap2000i0: <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc fq_codel master vmbr1 state UNKNOWN group default qlen 1000
    link/ether e6:ed:cc:95:a1:1d brd ff:ff:ff:ff:ff:ff

Code:

root@DC4-R630:~# iperf3 -s
-----------------------------------------------------------
Server listening on 5201 (test #1)
-----------------------------------------------------------
Accepted connection from 192.168.30.240, port 46964
[  5] local 192.168.30.241 port 5201 connected to 192.168.30.240 port 46976
[ ID] Interval           Transfer     Bitrate
[  5]   0.00-1.00   sec  1.15 GBytes  9.88 Gbits/sec
[  5]   1.00-2.00   sec  1.15 GBytes  9.89 Gbits/sec
[  5]   2.00-3.00   sec  1.15 GBytes  9.90 Gbits/sec
[  5]   3.00-4.00   sec  1.15 GBytes  9.89 Gbits/sec
[  5]   4.00-5.00   sec  1.15 GBytes  9.89 Gbits/sec
[  5]   5.00-6.00   sec  1.15 GBytes  9.89 Gbits/sec
[  5]   6.00-7.00   sec  1.15 GBytes  9.89 Gbits/sec
[  5]   7.00-8.00   sec  1.15 GBytes  9.88 Gbits/sec
[  5]   8.00-9.00   sec  1.15 GBytes  9.89 Gbits/sec
[  5]   9.00-10.00  sec  1.15 GBytes  9.89 Gbits/sec
[  5]  10.00-10.00  sec  1.25 MBytes  8.98 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate
[  5]   0.00-10.00  sec  11.5 GBytes  9.89 Gbits/sec                  receiver
-----------------------------------------------------------
Server listening on 5201 (test #2)
-----------------------------------------------------------

Code:

[global]
cluster_network = 192.168.30.0/24
    auth_client_required = cephx
    auth_cluster_required = cephx
    auth_service_required = cephx
    fsid = 2c73b9cd-e0d5-42a6-a47b-b713ac77000f
    mon_allow_pool_delete = true
    mon_host = 192.168.26.240 192.168.26.241 192.168.26.230
    ms_bind_ipv4 = true
    ms_bind_ipv6 = false
    osd_pool_default_min_size = 2
    osd_pool_default_size = 3
    public_network = 192.168.26.0/24

[client]
    auth_client_required = cephx
    auth_cluster_required = cephx
    auth_service_required = cephx
    keyring = /etc/pve/priv/$cluster.$name.keyring
    mon_allow_pool_delete = true
    ms_bind_ipv6 = false
    osd_pool_default_min_size = 1
    osd_pool_default_size = 2
    public_network = 192.168.26.0/24

[client.crash]
    keyring = /etc/pve/ceph/$cluster.$name.keyring

[mon.DC3-R630]
    public_addr = 192.168.26.240

[mon.DC4-R630]
    public_addr = 192.168.26.241

mon_host = 192.168.26.240,192.168.26.241,192.168.26.230
mon_initial_members = DC3-R630, DC4-R630, PLEX

I hope someone can help me out

UdoB · Saturday at 19:00

flashback830 said:
I have 3 Proxmox servers, two of which are supposed to run Ceph.

Make sure to understand the limitations of two Ceph nodes.

Personally I came to the conclusion that I wanted at least five! https://forum.proxmox.com/threads/fabu-can-i-use-ceph-in-a-_very_-small-cluster.159671/

Disclaimer: not using Ceph currently...

SteveITS · Saturday at 20:00

Are these enterprise SSDs?

public_network Is where the initial disk write happens. The Ceph private net is where the replication happens (the copy, rebalance, etc.).

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flashback830

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UdoB

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SteveITS

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